Home / 187,311.40-280,967.10-185,999.20

Finding the Fourth Proportional to 187,311.40, 280,967.10 and 185,999.20

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Solution

The fourth proportional to 187,311.40, 280,967.10 and 185,999.20 is: 278,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,311.40 : 280,967.10 = 185,999.20 : x
  2. Step 2: Convert to fraction form
    187,311.40/280,967.10 = 185,999.20/x
  3. Step 3: Cross multiply
    187,311.40x = 280,967.10 × 185,999.20
  4. Step 4: Simplify right side
    187,311.40x = 52,259,655,826.32
  5. Step 5: Solve for x
    x = 52,259,655,826.32/187,311.40
  6. Step 6: Final answer
    x = 278,998.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.